diff --git a/CMake/Modules/CompilerFlags.cmake b/CMake/Modules/CompilerFlags.cmake
index 63ec991acb7727c0c9ea0010a98ea74e4d922cdc..63b5b17c2c3de81ff7b88f6bc6a8f63fc54764d8 100644
--- a/CMake/Modules/CompilerFlags.cmake
+++ b/CMake/Modules/CompilerFlags.cmake
@@ -39,7 +39,7 @@ elseif(BUILD_TYPE STREQUAL "snapshot")
 	add_definitions(-DREL_SNAPSHOT)
 endif()
 
-if (CMAKE_BUILD_TYPE STREQUAL "debug")
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
     add_definitions(-DDEBUG)
 
 	CHECK_CXX_COMPILER_FLAG("-Og" COMPILER_HAS_OG)
@@ -49,7 +49,7 @@ if (CMAKE_BUILD_TYPE STREQUAL "debug")
 		add_compile_options(-O0)
 	endif()
 
-elseif (CMAKE_BUILD_TYPE STREQUAL "release")
+elseif (CMAKE_BUILD_TYPE STREQUAL "Release")
     remove_definitions(-DNDEBUG)
     add_definitions(-DRELEASE)
 	add_compile_options(-O3)